Bonoy, Diomel Gryle, Ray Allen Directo, Whynne Ordinario, Reeiz Cussler Yaco, Krizzalyn Mhae Aromin, Criscia Maren Morilla, and Girly Ann Aggalaw. “Psidium Guajava (Guava Leaves) Ash and Eggshell Powder As a Alternative for Cement”. International Journal of Sustainability and Advanced Integrated Research 2, no. 2 (May 1, 2026): 1476–1482. Accessed September 9, 2026. https://ijsair.com/index.php/ijsair/article/view/409.